22770828 has 96 divisors (see below), whose sum is σ = 62899200. Its totient is φ = 7108992.

The previous prime is 22770827. The next prime is 22770877. The reversal of 22770828 is 82807722.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22770792 and 22770801.

It is not an unprimeable number, because it can be changed into a prime (22770823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221025 + ... + 221127.

It is an arithmetic number, because the mean of its divisors is an integer number (655200).

Almost surely, 2^22770828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22770828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31449600).

22770828 is an abundant number, since it is smaller than the sum of its proper divisors (40128372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22770828 is a wasteful number, since it uses less digits than its factorization.

22770828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 22770828 is about 4771.8788752440. The cubic root of 22770828 is about 283.4390003413.

The spelling of 22770828 in words is "twenty-two million, seven hundred seventy thousand, eight hundred twenty-eight".